Pileus Git - ~andy/gtk/blob - gtk/gtkmessagedialog.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 2 -*- */
   2 /* GTK - The GIMP Toolkit
   3  * Copyright (C) 2000 Red Hat, Inc.
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Library General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Library General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Library General Public
  16  * License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18  * Boston, MA 02111-1307, USA.
  19  */
  20
  21 /*
  22  * Modified by the GTK+ Team and others 1997-2003.  See the AUTHORS
  23  * file for a list of people on the GTK+ Team.  See the ChangeLog
  24  * files for a list of changes.  These files are distributed with
  25  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  26  */
  27
  28 #include "config.h"
  29
  30 #include <string.h>
  31
  32 #include "gtkmessagedialog.h"
  33 #include "gtkaccessible.h"
  34 #include "gtkbuildable.h"
  35 #include "gtklabel.h"
  36 #include "gtkbox.h"
  37 #include "gtkimage.h"
  38 #include "gtkstock.h"
  39 #include "gtkiconfactory.h"
  40 #include "gtkintl.h"
  41 #include "gtkprivate.h"
  42 #include "gtktypebuiltins.h"
  43
  44 /**
  45  * SECTION:gtkmessagedialog
  46  * @Short_description: A convenient message window
  47  * @Title: GtkMessageDialog
  48  * @See_also:#GtkDialog
  49  *
  50  * #GtkMessageDialog presents a dialog with an image representing the type of
  51  * message (Error, Question, etc.) alongside some message text. It's simply a
  52  * convenience widget; you could construct the equivalent of #GtkMessageDialog
  53  * from #GtkDialog without too much effort, but #GtkMessageDialog saves typing.
  54  *
  55  * The easiest way to do a modal message dialog is to use gtk_dialog_run(), though
  56  * you can also pass in the %GTK_DIALOG_MODAL flag, gtk_dialog_run() automatically
  57  * makes the dialog modal and waits for the user to respond to it. gtk_dialog_run()
  58  * returns when any dialog button is clicked.
  59  * <example>
  60  * <title>A modal dialog.</title>
  61  * <programlisting>
  62  *  dialog = gtk_message_dialog_new (main_application_window,
  63  *                                   GTK_DIALOG_DESTROY_WITH_PARENT,
  64  *                                   GTK_MESSAGE_ERROR,
  65  *                                   GTK_BUTTONS_CLOSE,
  66  *                                   "Error loading file '&percnt;s': &percnt;s",
  67  *                                   filename, g_strerror (errno));
  68  *  gtk_dialog_run (GTK_DIALOG (dialog));
  69  *  gtk_widget_destroy (dialog);
  70  * </programlisting>
  71  * </example>
  72  * You might do a non-modal #GtkMessageDialog as follows:
  73  * <example>
  74  * <title>A non-modal dialog.</title>
  75  * <programlisting>
  76  *  dialog = gtk_message_dialog_new (main_application_window,
  77  *                                   GTK_DIALOG_DESTROY_WITH_PARENT,
  78  *                                   GTK_MESSAGE_ERROR,
  79  *                                   GTK_BUTTONS_CLOSE,
  80  *                                   "Error loading file '&percnt;s': &percnt;s",
  81  *                                   filename, g_strerror (errno));
  82  *
  83  *  /&ast; Destroy the dialog when the user responds to it (e.g. clicks a button) &ast;/
  84  *  g_signal_connect_swapped (dialog, "response",
  85  *                            G_CALLBACK (gtk_widget_destroy),
  86  *                            dialog);
  87  * </programlisting>
  88  * </example>
  89  *
  90  * <refsect2 id="GtkMessageDialog-BUILDER-UI">
  91  * <title>GtkMessageDialog as GtkBuildable</title>
  92  * <para>
  93  * The GtkMessageDialog implementation of the GtkBuildable interface exposes
  94  * the message area as an internal child with the name "message_area".
  95  * </para>
  96  * </refsect2>
  97  */
  98
  99 struct _GtkMessageDialogPrivate
 100 {
 101   GtkWidget     *image;
 102   GtkWidget     *label;
 103   GtkWidget     *message_area; /* vbox for the primary and secondary labels, and any extra content from the caller */
 104   GtkWidget     *secondary_label;
 105
 106   guint          has_primary_markup : 1;
 107   guint          has_secondary_text : 1;
 108   guint          message_type       : 3;
 109 };
 110
 111 static void gtk_message_dialog_style_updated (GtkWidget             *widget);
 112
 113 static void gtk_message_dialog_set_property (GObject          *object,
 114                                              guint             prop_id,
 115                                              const GValue     *value,
 116                                              GParamSpec       *pspec);
 117 static void gtk_message_dialog_get_property (GObject          *object,
 118                                              guint             prop_id,
 119                                              GValue           *value,
 120                                              GParamSpec       *pspec);
 121 static void gtk_message_dialog_add_buttons  (GtkMessageDialog *message_dialog,
 122                                              GtkButtonsType    buttons);
 123 static void      gtk_message_dialog_buildable_interface_init     (GtkBuildableIface *iface);
 124 static GObject * gtk_message_dialog_buildable_get_internal_child (GtkBuildable  *buildable,
 125                                                                   GtkBuilder    *builder,
 126                                                                   const gchar   *childname);
 127
 128
 129 enum {
 130   PROP_0,
 131   PROP_MESSAGE_TYPE,
 132   PROP_BUTTONS,
 133   PROP_TEXT,
 134   PROP_USE_MARKUP,
 135   PROP_SECONDARY_TEXT,
 136   PROP_SECONDARY_USE_MARKUP,
 137   PROP_IMAGE,
 138   PROP_MESSAGE_AREA
 139 };
 140
 141 G_DEFINE_TYPE_WITH_CODE (GtkMessageDialog, gtk_message_dialog, GTK_TYPE_DIALOG,
 142                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 143                                                 gtk_message_dialog_buildable_interface_init))
 144
 145 static GtkBuildableIface *parent_buildable_iface;
 146
 147 static void
 148 gtk_message_dialog_buildable_interface_init (GtkBuildableIface *iface)
 149 {
 150   parent_buildable_iface = g_type_interface_peek_parent (iface);
 151   iface->get_internal_child = gtk_message_dialog_buildable_get_internal_child;
 152   iface->custom_tag_start = parent_buildable_iface->custom_tag_start;
 153   iface->custom_finished = parent_buildable_iface->custom_finished;
 154 }
 155
 156 static GObject *
 157 gtk_message_dialog_buildable_get_internal_child (GtkBuildable *buildable,
 158                                                  GtkBuilder   *builder,
 159                                                  const gchar  *childname)
 160 {
 161   if (strcmp (childname, "message_area") == 0)
 162     return G_OBJECT (gtk_message_dialog_get_message_area (GTK_MESSAGE_DIALOG (buildable)));
 163
 164   return parent_buildable_iface->get_internal_child (buildable, builder, childname);
 165 }
 166
 167
 168 static void
 169 gtk_message_dialog_class_init (GtkMessageDialogClass *class)
 170 {
 171   GtkWidgetClass *widget_class;
 172   GObjectClass *gobject_class;
 173
 174   widget_class = GTK_WIDGET_CLASS (class);
 175   gobject_class = G_OBJECT_CLASS (class);
 176
 177   widget_class->style_updated = gtk_message_dialog_style_updated;
 178
 179   gtk_widget_class_set_accessible_role (widget_class, ATK_ROLE_ALERT);
 180
 181   gobject_class->set_property = gtk_message_dialog_set_property;
 182   gobject_class->get_property = gtk_message_dialog_get_property;
 183
 184   gtk_widget_class_install_style_property (widget_class,
 185                                            g_param_spec_int ("message-border",
 186                                                              P_("Image/label border"),
 187                                                              P_("Width of border around the label and image in the message dialog"),
 188                                                              0,
 189                                                              G_MAXINT,
 190                                                              12,
 191                                                              GTK_PARAM_READABLE));
 192
 193   /**
 194    * GtkMessageDialog:message-type:
 195    *
 196    * The type of the message. The type is used to determine
 197    * the image that is shown in the dialog, unless the image is
 198    * explicitly set by the ::image property.
 199    */
 200   g_object_class_install_property (gobject_class,
 201                                    PROP_MESSAGE_TYPE,
 202                                    g_param_spec_enum ("message-type",
 203                                                       P_("Message Type"),
 204                                                       P_("The type of message"),
 205                                                       GTK_TYPE_MESSAGE_TYPE,
 206                                                       GTK_MESSAGE_INFO,
 207                                                       GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT));
 208   g_object_class_install_property (gobject_class,
 209                                    PROP_BUTTONS,
 210                                    g_param_spec_enum ("buttons",
 211                                                       P_("Message Buttons"),
 212                                                       P_("The buttons shown in the message dialog"),
 213                                                       GTK_TYPE_BUTTONS_TYPE,
 214                                                       GTK_BUTTONS_NONE,
 215                                                       GTK_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY));
 216
 217   /**
 218    * GtkMessageDialog:text:
 219    *
 220    * The primary text of the message dialog. If the dialog has
 221    * a secondary text, this will appear as the title.
 222    *
 223    * Since: 2.10
 224    */
 225   g_object_class_install_property (gobject_class,
 226                                    PROP_TEXT,
 227                                    g_param_spec_string ("text",
 228                                                         P_("Text"),
 229                                                         P_("The primary text of the message dialog"),
 230                                                         "",
 231                                                         GTK_PARAM_READWRITE));
 232
 233   /**
 234    * GtkMessageDialog:use-markup:
 235    *
 236    * %TRUE if the primary text of the dialog includes Pango markup.
 237    * See pango_parse_markup().
 238    *
 239    * Since: 2.10
 240    */
 241   g_object_class_install_property (gobject_class,
 242                                    PROP_USE_MARKUP,
 243                                    g_param_spec_boolean ("use-markup",
 244                                                          P_("Use Markup"),
 245                                                          P_("The primary text of the title includes Pango markup."),
 246                                                          FALSE,
 247                                                          GTK_PARAM_READWRITE));
 248
 249   /**
 250    * GtkMessageDialog:secondary-text:
 251    *
 252    * The secondary text of the message dialog.
 253    *
 254    * Since: 2.10
 255    */
 256   g_object_class_install_property (gobject_class,
 257                                    PROP_SECONDARY_TEXT,
 258                                    g_param_spec_string ("secondary-text",
 259                                                         P_("Secondary Text"),
 260                                                         P_("The secondary text of the message dialog"),
 261                                                         NULL,
 262                                                         GTK_PARAM_READWRITE));
 263
 264   /**
 265    * GtkMessageDialog:secondary-use-markup:
 266    *
 267    * %TRUE if the secondary text of the dialog includes Pango markup.
 268    * See pango_parse_markup().
 269    *
 270    * Since: 2.10
 271    */
 272   g_object_class_install_property (gobject_class,
 273                                    PROP_SECONDARY_USE_MARKUP,
 274                                    g_param_spec_boolean ("secondary-use-markup",
 275                                                          P_("Use Markup in secondary"),
 276                                                          P_("The secondary text includes Pango markup."),
 277                                                          FALSE,
 278                                                          GTK_PARAM_READWRITE));
 279
 280   /**
 281    * GtkMessageDialog:image:
 282    *
 283    * The image for this dialog.
 284    *
 285    * Since: 2.10
 286    */
 287   g_object_class_install_property (gobject_class,
 288                                    PROP_IMAGE,
 289                                    g_param_spec_object ("image",
 290                                                         P_("Image"),
 291                                                         P_("The image"),
 292                                                         GTK_TYPE_WIDGET,
 293                                                         GTK_PARAM_READWRITE));
 294
 295   /**
 296    * GtkMessageDialog:message-area
 297    *
 298    * The #GtkVBox that corresponds to the message area of this dialog.  See
 299    * gtk_message_dialog_get_message_area() for a detailed description of this
 300    * area.
 301    *
 302    * Since: 2.22
 303    */
 304   g_object_class_install_property (gobject_class,
 305                                    PROP_MESSAGE_AREA,
 306                                    g_param_spec_object ("message-area",
 307                                                         P_("Message area"),
 308                                                         P_("GtkVBox that holds the dialog's primary and secondary labels"),
 309                                                         GTK_TYPE_WIDGET,
 310                                                         GTK_PARAM_READABLE));
 311
 312   g_type_class_add_private (gobject_class, sizeof (GtkMessageDialogPrivate));
 313 }
 314
 315 static void
 316 gtk_message_dialog_init (GtkMessageDialog *dialog)
 317 {
 318   GtkWidget *hbox;
 319   GtkDialog *message_dialog = GTK_DIALOG (dialog);
 320   GtkWidget *action_area, *content_area;
 321   GtkMessageDialogPrivate *priv;
 322
 323   dialog->priv = G_TYPE_INSTANCE_GET_PRIVATE (dialog,
 324                                               GTK_TYPE_MESSAGE_DIALOG,
 325                                               GtkMessageDialogPrivate);
 326   priv = dialog->priv;
 327
 328   content_area = gtk_dialog_get_content_area (message_dialog);
 329   action_area = gtk_dialog_get_action_area (message_dialog);
 330
 331   gtk_window_set_resizable (GTK_WINDOW (dialog), FALSE);
 332   gtk_window_set_title (GTK_WINDOW (dialog), "");
 333   gtk_window_set_skip_taskbar_hint (GTK_WINDOW (dialog), TRUE);
 334
 335   priv->has_primary_markup = FALSE;
 336   priv->has_secondary_text = FALSE;
 337   priv->secondary_label = gtk_label_new (NULL);
 338   gtk_widget_set_no_show_all (priv->secondary_label, TRUE);
 339
 340   priv->label = gtk_label_new (NULL);
 341   priv->image = gtk_image_new_from_stock (NULL, GTK_ICON_SIZE_DIALOG);
 342   gtk_widget_set_halign (priv->image, GTK_ALIGN_CENTER);
 343   gtk_widget_set_valign (priv->image, GTK_ALIGN_START);
 344
 345   gtk_label_set_line_wrap  (GTK_LABEL (priv->label), TRUE);
 346   gtk_label_set_selectable (GTK_LABEL (priv->label), TRUE);
 347   gtk_widget_set_halign (priv->label, GTK_ALIGN_START);
 348   gtk_widget_set_valign (priv->label, GTK_ALIGN_START);
 349
 350   gtk_label_set_line_wrap  (GTK_LABEL (priv->secondary_label), TRUE);
 351   gtk_label_set_selectable (GTK_LABEL (priv->secondary_label), TRUE);
 352   gtk_widget_set_halign (priv->secondary_label, GTK_ALIGN_START);
 353   gtk_widget_set_valign (priv->secondary_label, GTK_ALIGN_START);
 354
 355   hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 12);
 356   priv->message_area = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
 357
 358   gtk_box_pack_start (GTK_BOX (priv->message_area), priv->label,
 359                       FALSE, FALSE, 0);
 360
 361   gtk_box_pack_start (GTK_BOX (priv->message_area), priv->secondary_label,
 362                       TRUE, TRUE, 0);
 363
 364   gtk_box_pack_start (GTK_BOX (hbox), priv->image,
 365                       FALSE, FALSE, 0);
 366
 367   gtk_box_pack_start (GTK_BOX (hbox), priv->message_area,
 368                       TRUE, TRUE, 0);
 369
 370   gtk_box_pack_start (GTK_BOX (content_area),
 371                       hbox,
 372                       FALSE, FALSE, 0);
 373
 374   gtk_container_set_border_width (GTK_CONTAINER (dialog), 5);
 375   gtk_container_set_border_width (GTK_CONTAINER (hbox), 5);
 376   gtk_box_set_spacing (GTK_BOX (content_area), 14); /* 14 + 2 * 5 = 24 */
 377   gtk_container_set_border_width (GTK_CONTAINER (action_area), 5);
 378   gtk_box_set_spacing (GTK_BOX (action_area), 6);
 379
 380   gtk_message_dialog_style_updated (GTK_WIDGET (dialog));
 381
 382   gtk_widget_show_all (hbox);
 383 }
 384
 385 static void
 386 setup_primary_label_font (GtkMessageDialog *dialog)
 387 {
 388   GtkMessageDialogPrivate *priv = dialog->priv;
 389   gint size;
 390   PangoFontDescription *font_desc;
 391   GtkStyleContext *context;
 392   GtkStateFlags state;
 393
 394   /* unset the font settings */
 395   gtk_widget_override_font (priv->label, NULL);
 396
 397   if (priv->has_secondary_text && !priv->has_primary_markup)
 398     {
 399       context = gtk_widget_get_style_context (priv->label);
 400       state = gtk_widget_get_state_flags (priv->label);
 401
 402       size = pango_font_description_get_size (gtk_style_context_get_font (context, state));
 403       font_desc = pango_font_description_new ();
 404       pango_font_description_set_weight (font_desc, PANGO_WEIGHT_BOLD);
 405       pango_font_description_set_size (font_desc, size * PANGO_SCALE_LARGE);
 406       gtk_widget_override_font (priv->label, font_desc);
 407       pango_font_description_free (font_desc);
 408     }
 409 }
 410
 411 static void
 412 setup_type (GtkMessageDialog *dialog,
 413             GtkMessageType    type)
 414 {
 415   GtkMessageDialogPrivate *priv = dialog->priv;
 416   const gchar *stock_id = NULL;
 417   AtkObject *atk_obj;
 418
 419   priv->message_type = type;
 420
 421   switch (type)
 422     {
 423     case GTK_MESSAGE_INFO:
 424       stock_id = GTK_STOCK_DIALOG_INFO;
 425       break;
 426
 427     case GTK_MESSAGE_QUESTION:
 428       stock_id = GTK_STOCK_DIALOG_QUESTION;
 429       break;
 430
 431     case GTK_MESSAGE_WARNING:
 432       stock_id = GTK_STOCK_DIALOG_WARNING;
 433       break;
 434
 435     case GTK_MESSAGE_ERROR:
 436       stock_id = GTK_STOCK_DIALOG_ERROR;
 437       break;
 438
 439     case GTK_MESSAGE_OTHER:
 440       break;
 441
 442     default:
 443       g_warning ("Unknown GtkMessageType %u", type);
 444       break;
 445     }
 446
 447   if (stock_id)
 448     gtk_image_set_from_stock (GTK_IMAGE (priv->image), stock_id,
 449                               GTK_ICON_SIZE_DIALOG);
 450
 451   atk_obj = gtk_widget_get_accessible (GTK_WIDGET (dialog));
 452   if (GTK_IS_ACCESSIBLE (atk_obj))
 453     {
 454       atk_object_set_role (atk_obj, ATK_ROLE_ALERT);
 455       if (stock_id)
 456         {
 457           GtkStockItem item;
 458
 459           gtk_stock_lookup (stock_id, &item);
 460           atk_object_set_name (atk_obj, item.label);
 461         }
 462     }
 463 }
 464
 465 static void
 466 gtk_message_dialog_set_property (GObject      *object,
 467                                  guint         prop_id,
 468                                  const GValue *value,
 469                                  GParamSpec   *pspec)
 470 {
 471   GtkMessageDialog *dialog = GTK_MESSAGE_DIALOG (object);
 472   GtkMessageDialogPrivate *priv = dialog->priv;
 473
 474   switch (prop_id)
 475     {
 476     case PROP_MESSAGE_TYPE:
 477       setup_type (dialog, g_value_get_enum (value));
 478       break;
 479     case PROP_BUTTONS:
 480       gtk_message_dialog_add_buttons (dialog, g_value_get_enum (value));
 481       break;
 482     case PROP_TEXT:
 483       if (priv->has_primary_markup)
 484         gtk_label_set_markup (GTK_LABEL (priv->label),
 485                               g_value_get_string (value));
 486       else
 487         gtk_label_set_text (GTK_LABEL (priv->label),
 488                             g_value_get_string (value));
 489       break;
 490     case PROP_USE_MARKUP:
 491       priv->has_primary_markup = g_value_get_boolean (value) != FALSE;
 492       gtk_label_set_use_markup (GTK_LABEL (priv->label),
 493                                 priv->has_primary_markup);
 494       setup_primary_label_font (dialog);
 495       break;
 496     case PROP_SECONDARY_TEXT:
 497       {
 498         const gchar *txt = g_value_get_string (value);
 499
 500         if (gtk_label_get_use_markup (GTK_LABEL (priv->secondary_label)))
 501           gtk_label_set_markup (GTK_LABEL (priv->secondary_label), txt);
 502         else
 503           gtk_label_set_text (GTK_LABEL (priv->secondary_label), txt);
 504
 505         if (txt)
 506           {
 507             priv->has_secondary_text = TRUE;
 508             gtk_widget_show (priv->secondary_label);
 509           }
 510         else
 511           {
 512             priv->has_secondary_text = FALSE;
 513             gtk_widget_hide (priv->secondary_label);
 514           }
 515         setup_primary_label_font (dialog);
 516       }
 517       break;
 518     case PROP_SECONDARY_USE_MARKUP:
 519       gtk_label_set_use_markup (GTK_LABEL (priv->secondary_label),
 520                                 g_value_get_boolean (value));
 521       break;
 522     case PROP_IMAGE:
 523       gtk_message_dialog_set_image (dialog, g_value_get_object (value));
 524       break;
 525
 526     default:
 527       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 528       break;
 529     }
 530 }
 531
 532 static void
 533 gtk_message_dialog_get_property (GObject     *object,
 534                                  guint        prop_id,
 535                                  GValue      *value,
 536                                  GParamSpec  *pspec)
 537 {
 538   GtkMessageDialog *dialog = GTK_MESSAGE_DIALOG (object);
 539   GtkMessageDialogPrivate *priv = dialog->priv;
 540
 541   switch (prop_id)
 542     {
 543     case PROP_MESSAGE_TYPE:
 544       g_value_set_enum (value, (GtkMessageType) priv->message_type);
 545       break;
 546     case PROP_TEXT:
 547       g_value_set_string (value, gtk_label_get_label (GTK_LABEL (priv->label)));
 548       break;
 549     case PROP_USE_MARKUP:
 550       g_value_set_boolean (value, priv->has_primary_markup);
 551       break;
 552     case PROP_SECONDARY_TEXT:
 553       if (priv->has_secondary_text)
 554       g_value_set_string (value,
 555                           gtk_label_get_label (GTK_LABEL (priv->secondary_label)));
 556       else
 557         g_value_set_string (value, NULL);
 558       break;
 559     case PROP_SECONDARY_USE_MARKUP:
 560       if (priv->has_secondary_text)
 561         g_value_set_boolean (value,
 562                              gtk_label_get_use_markup (GTK_LABEL (priv->secondary_label)));
 563       else
 564         g_value_set_boolean (value, FALSE);
 565       break;
 566     case PROP_IMAGE:
 567       g_value_set_object (value, priv->image);
 568       break;
 569     case PROP_MESSAGE_AREA:
 570       g_value_set_object (value, priv->message_area);
 571       break;
 572     default:
 573       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 574       break;
 575     }
 576 }
 577
 578 /**
 579  * gtk_message_dialog_new:
 580  * @parent: (allow-none): transient parent, or %NULL for none
 581  * @flags: flags
 582  * @type: type of message
 583  * @buttons: set of buttons to use
 584  * @message_format: (allow-none): printf()-style format string, or %NULL
 585  * @...: arguments for @message_format
 586  *
 587  * Creates a new message dialog, which is a simple dialog with an icon
 588  * indicating the dialog type (error, warning, etc.) and some text the
 589  * user may want to see. When the user clicks a button a "response"
 590  * signal is emitted with response IDs from #GtkResponseType. See
 591  * #GtkDialog for more details.
 592  *
 593  * Return value: (transfer none): a new #GtkMessageDialog
 594  */
 595 GtkWidget*
 596 gtk_message_dialog_new (GtkWindow     *parent,
 597                         GtkDialogFlags flags,
 598                         GtkMessageType type,
 599                         GtkButtonsType buttons,
 600                         const gchar   *message_format,
 601                         ...)
 602 {
 603   GtkWidget *widget;
 604   GtkDialog *dialog;
 605   gchar* msg = NULL;
 606   va_list args;
 607
 608   g_return_val_if_fail (parent == NULL || GTK_IS_WINDOW (parent), NULL);
 609
 610   widget = g_object_new (GTK_TYPE_MESSAGE_DIALOG,
 611                          "message-type", type,
 612                          "buttons", buttons,
 613                          NULL);
 614   dialog = GTK_DIALOG (widget);
 615
 616   if (message_format)
 617     {
 618       va_start (args, message_format);
 619       msg = g_strdup_vprintf (message_format, args);
 620       va_end (args);
 621
 622       gtk_label_set_text (GTK_LABEL (GTK_MESSAGE_DIALOG (widget)->priv->label),
 623                           msg);
 624
 625       g_free (msg);
 626     }
 627
 628   if (parent != NULL)
 629     gtk_window_set_transient_for (GTK_WINDOW (widget),
 630                                   GTK_WINDOW (parent));
 631
 632   if (flags & GTK_DIALOG_MODAL)
 633     gtk_window_set_modal (GTK_WINDOW (dialog), TRUE);
 634
 635   if (flags & GTK_DIALOG_DESTROY_WITH_PARENT)
 636     gtk_window_set_destroy_with_parent (GTK_WINDOW (dialog), TRUE);
 637
 638   return widget;
 639 }
 640
 641 /**
 642  * gtk_message_dialog_new_with_markup:
 643  * @parent: (allow-none): transient parent, or %NULL for none
 644  * @flags: flags
 645  * @type: type of message
 646  * @buttons: set of buttons to use
 647  * @message_format: (allow-none): printf()-style format string, or %NULL
 648  * @...: arguments for @message_format
 649  *
 650  * Creates a new message dialog, which is a simple dialog with an icon
 651  * indicating the dialog type (error, warning, etc.) and some text which
 652  * is marked up with the <link linkend="PangoMarkupFormat">Pango text markup language</link>.
 653  * When the user clicks a button a "response" signal is emitted with
 654  * response IDs from #GtkResponseType. See #GtkDialog for more details.
 655  *
 656  * Special XML characters in the printf() arguments passed to this
 657  * function will automatically be escaped as necessary.
 658  * (See g_markup_printf_escaped() for how this is implemented.)
 659  * Usually this is what you want, but if you have an existing
 660  * Pango markup string that you want to use literally as the
 661  * label, then you need to use gtk_message_dialog_set_markup()
 662  * instead, since you can't pass the markup string either
 663  * as the format (it might contain '%' characters) or as a string
 664  * argument.
 665  * |[
 666  *  GtkWidget *dialog;
 667  *  dialog = gtk_message_dialog_new (main_application_window,
 668  *                                   GTK_DIALOG_DESTROY_WITH_PARENT,
 669  *                                   GTK_MESSAGE_ERROR,
 670  *                                   GTK_BUTTONS_CLOSE,
 671  *                                   NULL);
 672  *  gtk_message_dialog_set_markup (GTK_MESSAGE_DIALOG (dialog),
 673  *                                 markup);
 674  * ]|
 675  *
 676  * Return value: a new #GtkMessageDialog
 677  *
 678  * Since: 2.4
 679  **/
 680 GtkWidget*
 681 gtk_message_dialog_new_with_markup (GtkWindow     *parent,
 682                                     GtkDialogFlags flags,
 683                                     GtkMessageType type,
 684                                     GtkButtonsType buttons,
 685                                     const gchar   *message_format,
 686                                     ...)
 687 {
 688   GtkWidget *widget;
 689   va_list args;
 690   gchar *msg = NULL;
 691
 692   g_return_val_if_fail (parent == NULL || GTK_IS_WINDOW (parent), NULL);
 693
 694   widget = gtk_message_dialog_new (parent, flags, type, buttons, NULL);
 695
 696   if (message_format)
 697     {
 698       va_start (args, message_format);
 699       msg = g_markup_vprintf_escaped (message_format, args);
 700       va_end (args);
 701
 702       gtk_message_dialog_set_markup (GTK_MESSAGE_DIALOG (widget), msg);
 703
 704       g_free (msg);
 705     }
 706
 707   return widget;
 708 }
 709
 710 /**
 711  * gtk_message_dialog_set_image:
 712  * @dialog: a #GtkMessageDialog
 713  * @image: the image
 714  *
 715  * Sets the dialog's image to @image.
 716  *
 717  * Since: 2.10
 718  **/
 719 void
 720 gtk_message_dialog_set_image (GtkMessageDialog *dialog,
 721                               GtkWidget        *image)
 722 {
 723   GtkMessageDialogPrivate *priv;
 724   GtkWidget *parent;
 725
 726   g_return_if_fail (GTK_IS_MESSAGE_DIALOG (dialog));
 727   g_return_if_fail (image == NULL || GTK_IS_WIDGET (image));
 728
 729   priv = dialog->priv;
 730
 731   if (image == NULL)
 732     {
 733       image = gtk_image_new_from_stock (NULL, GTK_ICON_SIZE_DIALOG);
 734       gtk_widget_set_halign (image, GTK_ALIGN_CENTER);
 735       gtk_widget_set_valign (image, GTK_ALIGN_START);
 736     }
 737
 738   priv->message_type = GTK_MESSAGE_OTHER;
 739
 740   parent = gtk_widget_get_parent (priv->image);
 741   gtk_container_add (GTK_CONTAINER (parent), image);
 742   gtk_container_remove (GTK_CONTAINER (parent), priv->image);
 743   gtk_box_reorder_child (GTK_BOX (parent), image, 0);
 744
 745   priv->image = image;
 746
 747   g_object_notify (G_OBJECT (dialog), "image");
 748 }
 749
 750 /**
 751  * gtk_message_dialog_get_image:
 752  * @dialog: a #GtkMessageDialog
 753  *
 754  * Gets the dialog's image.
 755  *
 756  * Return value: (transfer none): the dialog's image
 757  *
 758  * Since: 2.14
 759  **/
 760 GtkWidget *
 761 gtk_message_dialog_get_image (GtkMessageDialog *dialog)
 762 {
 763   g_return_val_if_fail (GTK_IS_MESSAGE_DIALOG (dialog), NULL);
 764
 765   return dialog->priv->image;
 766 }
 767
 768 /**
 769  * gtk_message_dialog_set_markup:
 770  * @message_dialog: a #GtkMessageDialog
 771  * @str: markup string (see <link linkend="PangoMarkupFormat">Pango markup format</link>)
 772  *
 773  * Sets the text of the message dialog to be @str, which is marked
 774  * up with the <link linkend="PangoMarkupFormat">Pango text markup
 775  * language</link>.
 776  *
 777  * Since: 2.4
 778  **/
 779 void
 780 gtk_message_dialog_set_markup (GtkMessageDialog *message_dialog,
 781                                const gchar      *str)
 782 {
 783   GtkMessageDialogPrivate *priv;
 784
 785   g_return_if_fail (GTK_IS_MESSAGE_DIALOG (message_dialog));
 786
 787   priv = message_dialog->priv;
 788
 789   priv->has_primary_markup = TRUE;
 790   gtk_label_set_markup (GTK_LABEL (priv->label), str);
 791 }
 792
 793 /**
 794  * gtk_message_dialog_format_secondary_text:
 795  * @message_dialog: a #GtkMessageDialog
 796  * @message_format: (allow-none): printf()-style format string, or %NULL
 797  * @...: arguments for @message_format
 798  *
 799  * Sets the secondary text of the message dialog to be @message_format
 800  * (with printf()-style).
 801  *
 802  * Note that setting a secondary text makes the primary text become
 803  * bold, unless you have provided explicit markup.
 804  *
 805  * Since: 2.6
 806  */
 807 void
 808 gtk_message_dialog_format_secondary_text (GtkMessageDialog *message_dialog,
 809                                           const gchar      *message_format,
 810                                           ...)
 811 {
 812   va_list args;
 813   gchar *msg = NULL;
 814   GtkMessageDialogPrivate *priv;
 815
 816   g_return_if_fail (GTK_IS_MESSAGE_DIALOG (message_dialog));
 817
 818   priv = message_dialog->priv;
 819
 820   if (message_format)
 821     {
 822       priv->has_secondary_text = TRUE;
 823
 824       va_start (args, message_format);
 825       msg = g_strdup_vprintf (message_format, args);
 826       va_end (args);
 827
 828       gtk_widget_show (priv->secondary_label);
 829       gtk_label_set_text (GTK_LABEL (priv->secondary_label), msg);
 830
 831       g_free (msg);
 832     }
 833   else
 834     {
 835       priv->has_secondary_text = FALSE;
 836       gtk_widget_hide (priv->secondary_label);
 837     }
 838
 839   setup_primary_label_font (message_dialog);
 840 }
 841
 842 /**
 843  * gtk_message_dialog_format_secondary_markup:
 844  * @message_dialog: a #GtkMessageDialog
 845  * @message_format: printf()-style markup string (see
 846      <link linkend="PangoMarkupFormat">Pango markup format</link>), or %NULL
 847  * @...: arguments for @message_format
 848  *
 849  * Sets the secondary text of the message dialog to be @message_format (with
 850  * printf()-style), which is marked up with the
 851  * <link linkend="PangoMarkupFormat">Pango text markup language</link>.
 852  *
 853  * Note that setting a secondary text makes the primary text become
 854  * bold, unless you have provided explicit markup.
 855  *
 856  * Due to an oversight, this function does not escape special XML characters
 857  * like gtk_message_dialog_new_with_markup() does. Thus, if the arguments
 858  * may contain special XML characters, you should use g_markup_printf_escaped()
 859  * to escape it.
 860
 861  * <informalexample><programlisting>
 862  * gchar *msg;
 863  *
 864  * msg = g_markup_printf_escaped (message_format, ...);
 865  * gtk_message_dialog_format_secondary_markup (message_dialog, "&percnt;s", msg);
 866  * g_free (msg);
 867  * </programlisting></informalexample>
 868  *
 869  * Since: 2.6
 870  */
 871 void
 872 gtk_message_dialog_format_secondary_markup (GtkMessageDialog *message_dialog,
 873                                             const gchar      *message_format,
 874                                             ...)
 875 {
 876   va_list args;
 877   gchar *msg = NULL;
 878   GtkMessageDialogPrivate *priv;
 879
 880   g_return_if_fail (GTK_IS_MESSAGE_DIALOG (message_dialog));
 881
 882   priv = message_dialog->priv;
 883
 884   if (message_format)
 885     {
 886       priv->has_secondary_text = TRUE;
 887
 888       va_start (args, message_format);
 889       msg = g_strdup_vprintf (message_format, args);
 890       va_end (args);
 891
 892       gtk_widget_show (priv->secondary_label);
 893       gtk_label_set_markup (GTK_LABEL (priv->secondary_label), msg);
 894
 895       g_free (msg);
 896     }
 897   else
 898     {
 899       priv->has_secondary_text = FALSE;
 900       gtk_widget_hide (priv->secondary_label);
 901     }
 902
 903   setup_primary_label_font (message_dialog);
 904 }
 905
 906 /**
 907  * gtk_message_dialog_get_message_area:
 908  * @message_dialog: a #GtkMessageDialog
 909  *
 910  * Returns the message area of the dialog. This is the box where the
 911  * dialog's primary and secondary labels are packed. You can add your
 912  * own extra content to that box and it will appear below those labels,
 913  * on the right side of the dialog's image (or on the left for right-to-left
 914  * languages).  See gtk_dialog_get_content_area() for the corresponding
 915  * function in the parent #GtkDialog.
 916  *
 917  * Return value: (transfer none): A #GtkVBox corresponding to the
 918  *     "message area" in the @message_dialog.
 919  *
 920  * Since: 2.22
 921  **/
 922 GtkWidget *
 923 gtk_message_dialog_get_message_area (GtkMessageDialog *message_dialog)
 924 {
 925   g_return_val_if_fail (GTK_IS_MESSAGE_DIALOG (message_dialog), NULL);
 926
 927   return message_dialog->priv->message_area;
 928 }
 929
 930 static void
 931 gtk_message_dialog_add_buttons (GtkMessageDialog* message_dialog,
 932                                 GtkButtonsType buttons)
 933 {
 934   GtkDialog* dialog = GTK_DIALOG (message_dialog);
 935
 936   switch (buttons)
 937     {
 938     case GTK_BUTTONS_NONE:
 939       /* nothing */
 940       break;
 941
 942     case GTK_BUTTONS_OK:
 943       gtk_dialog_add_button (dialog,
 944                              GTK_STOCK_OK,
 945                              GTK_RESPONSE_OK);
 946       break;
 947
 948     case GTK_BUTTONS_CLOSE:
 949       gtk_dialog_add_button (dialog,
 950                              GTK_STOCK_CLOSE,
 951                              GTK_RESPONSE_CLOSE);
 952       break;
 953
 954     case GTK_BUTTONS_CANCEL:
 955       gtk_dialog_add_button (dialog,
 956                              GTK_STOCK_CANCEL,
 957                              GTK_RESPONSE_CANCEL);
 958       break;
 959
 960     case GTK_BUTTONS_YES_NO:
 961       gtk_dialog_add_button (dialog,
 962                              GTK_STOCK_NO,
 963                              GTK_RESPONSE_NO);
 964       gtk_dialog_add_button (dialog,
 965                              GTK_STOCK_YES,
 966                              GTK_RESPONSE_YES);
 967       gtk_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
 968                                                GTK_RESPONSE_YES,
 969                                                GTK_RESPONSE_NO,
 970                                                -1);
 971       break;
 972
 973     case GTK_BUTTONS_OK_CANCEL:
 974       gtk_dialog_add_button (dialog,
 975                              GTK_STOCK_CANCEL,
 976                              GTK_RESPONSE_CANCEL);
 977       gtk_dialog_add_button (dialog,
 978                              GTK_STOCK_OK,
 979                              GTK_RESPONSE_OK);
 980       gtk_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
 981                                                GTK_RESPONSE_OK,
 982                                                GTK_RESPONSE_CANCEL,
 983                                                -1);
 984       break;
 985
 986     default:
 987       g_warning ("Unknown GtkButtonsType");
 988       break;
 989     }
 990
 991   g_object_notify (G_OBJECT (message_dialog), "buttons");
 992 }
 993
 994 static void
 995 gtk_message_dialog_style_updated (GtkWidget *widget)
 996 {
 997   GtkMessageDialog *dialog = GTK_MESSAGE_DIALOG (widget);
 998   GtkWidget *parent;
 999   gint border_width;
1000
1001   parent = gtk_widget_get_parent (gtk_message_dialog_get_image (dialog));
1002
1003   if (parent)
1004     {
1005       gtk_widget_style_get (widget, "message-border",
1006                             &border_width, NULL);
1007
1008       gtk_container_set_border_width (GTK_CONTAINER (parent),
1009                                       MAX (0, border_width - 7));
1010     }
1011
1012   setup_primary_label_font (dialog);
1013
1014   GTK_WIDGET_CLASS (gtk_message_dialog_parent_class)->style_updated (widget);
1015 }